Carpet-sweeper



J. H. GRAHAM AND E. C. MURDIC K.

C'ARPET SWEEPER.

APPLICATION FILED JUNE 5,1917.

1,384,997., Patented July 19 1921.

2 SHEETS-SHEET 1- 13 g L95 J6 i J9 2 2 za si @Q 0 a J. H. GRAHAM AND E. C. MURDICK.

CARPET SWEEPER.

APPLICATION FILED JUNE 5,1912.

1 841,997,, Patented July 19, 1921.

2 SHEETS-SHEET 2.

UITED STATES ATENT OFFICE.

JAMES H. GRAHAM AND EVERETT C. MURDICK, OF TORRINGTON, CONNECTICUT, ASSIGNORS, BY MESNEV. ASSIGNMENTS, TO THE TORRINGTON COMPANY, OF TORRINGTON, CONNECTICUT, A. CORPORATION OF CONNECTICUT.

CARPET-SWEEPER.

Application filed June 5,

To all whom it may concern: 7

Be it known that we, JAMEs H. GRAHAM and EVERETT C. MURDICK, citizens of the United States, residing at Torrington, in

the county of Litchfield, State of Connecticut, have invented certain new and useful Improvements in Carpet-Sweepers, of which the following is a description, reference being had to the accompanying drawing and to the figures of reference marked thereon.

Our invention relates to improvements in carpet sweepers, and particularly to a novel arrangement for adjusting the-brush by a single lever at the rear of the sweeper housing, that is, the end toward the operator, both ends of the brush being adjusted simul taneously and without interference with the mechanism; and Fig. 4; is a section showing,

the connection between the yoke parts. Referring now, to the drawings 1 represents the frame or housing of our improved sweeper which is madeof any desired material and provided at the center with the rotary sweeper brush 2, having its trunnions 3and 4 extending outwardly through vertical slots 5 and 6 in the end walls 7 and 8 ofthe housing. On each side of the brush are arranged the dust or dirt receptacles 9 and 10, all of which is well understood and needs no further description. The front and-rear walls 9 and 10' of the frame extend beyond the end'walls 7 and 8, as clearlyshownin Fig. 1 of the drawings;

The extreme outer ends of the walls are connected together by the usual bars 11 and 12 which have their ends turned inwardly as indicated at 13 and secured to the walls, thus forming a space 141 betweenthe bars and the end walls 7 and 8 of; the housing. Mounted on trunnions 16 carried by the end Specification of Letters Patent.

Patented Ju yie, 1921..

1917. Serial No. 172,879.

walls 7 and 8 are the supporting and drive wheels 17, which as shown, are four in number, two at each end of the frame, and-arranged at all times to engage the friction wheels or rollers 18 carried by the ends of the trunnions 3 and 4 of the brush 2.

Pivotally mounted at19qand 20 to the inner faces of the bars 11 and 12 is the yoke 21 which extends forwardly to the front of the housing and passes inwardly into the same through openings 22 in the end walls 7 and 8. The free ends of the yoke beyond the pivots 19 and 20 are provided with elongated slots 23'which are arranged opposite the center of the drive rollers 18 carried by the brush 2. The bars 11 and 12 have piv-' oted thereto at 2& the spring arms 25 which have their outer ends provided with rigid pins 26 which extend through the elongated vertical slots 23 in the bars 11 and 12 and also through the elongated horizontal slots 23 in the yoke and enterthe sockets 27 in the outer faces of the drive rollers 18 and form bearings for the brush as will be seen in Fig. 1 of the drawings. The spring-arms 25 beyond the pins are struck out, as indicated at 28, so that the same can be grasped for the purpose: of springing the arm outwardly so that the brush can bereadily re moved. v A 1 The yoke 21, as shown, is made of bar metal in two sections 29 and 30 and interlocked together by the tongues 31 and 32 and slots 33 and 34, as clearly shown in Figs. 2' and 3 ofthe drawings, which allows for a certain amount of longitudinal movement or adjustment of the two sections in respect to each other. This connection between the two sections forming the yoke, also allows of the ready assemblingof the yoke or removal of thesame. The sections 29 and 30 are struck outas indicated at 85 to strengthen the sameat a point where it is subjected to the greatest strain.

The front wall 9 ofthe housing has so cured to its outer face a plate 36 to which is pivotally connected at 37' the L-shaped lever 38. Theupper endof the lever is pro vided with a hand portion39 whereby it can be operated The lever below the hand portion is provided'with portion 40 struck outwardly and" forming a recess adapted to engage the serrated portion 41 of the upper end ofthe plate 36 whereby the lever may 1 110 be held in its adjusted position. The outer pressure thereof on the surface'being swept.. The arms 25 belng pivoted concentric with athe supporting wheels, it will be seen that lower free end of the lever 38 is provided with a rigidinwardly extending pin 42 which passes througha segmental vertical slot 43 in the plate 36 and enters the'regis' tering elongated horizontal slots 44 and .45

in the two overlapping. portions of the sections 29 and 30 forming the yoke.

' The operation of the machine is as fol lows p y The housing is supported by the wheels in the usualmanner and is drawn back and forth over thecarpet or floor to be swept by .means of the handle 46. The wheels engaging the friction rollers 18, rotate the brush, all ofwhich is the usual operation. It Is often necessary or desirous to have a less or. greater pressure of the brush on the sure thereof on the surface being swept is obtained, This adjustment may also com.- pensate for the wear of the bristles-of the brush so as to'insure the engagement of the brush with the sweeping surface; The

movement ofthe lever in the opposite direction raises the free iends'of the yoke carry ing with it the brush and thus decreases the the movement of the roller of the brush is such that it will always engage the andcause rotation of thebrush.

Having thus described ourinvention, to'secure what we claimas new and desire by Letters Patent, is

1. A carpet sweeper comprising a housing having supporting means 'journaled therein,-bars supported outside of and at the endsof saidhousing, aabail pivoted to'said bars and projecting into said housing, a rotatable brush shaft passing through said housing ends and detachably carried by said bail outside of said.housing,ai1d means located within said housing for adjusting said pivoted'sprlng members carried by the bars bail to raise or lower said brush shaft.

2. .A carpet sweeper comprlsinga houslng,

bars extending across the ends of'the frame r and spaced therefrom, supporting wheels carried by the housing within the @said spaces, a] yoke pivoted to the inner facesofqthe bars and extending-within the houshousing and engaging the supporting wheels, and means without the housing for removably securing the brush to the'yoke.

3.;A carpet sweeper comprising a housin'g,

wheel I ing interlocking slotsjand' tongues and piv-.

ing, means in the housing for-adjusting the yoke, a brush within the housing, rollers carr ed by the brush on the outside of the and spaced therefrom, supporting Wheels carried by the housing within said spaces,

"for adjusting the yoke, a brush within the housing, rollers carried by the brush on the 'outsideof the housing andengaging the supporting wheels, and pins carried by the bars and extending through slots therein and through slots in the ends of'the. yoke and entering recesses in the ends of the friction rollers carried by the brush,v whereby the brush is vertically adjustably supported and removable. i

4.- A carpet sweeper comprising ahousing, bars extending. across the ends of the frame and spaced therefrom, supporting. wheels carried by the housing within the said spaces, a yoke. pivoted to the inner faces of the bar and extending within the housing, means within the housing for adjusting the yoke, a brush within the housing, rollers carried by the brush on the outside of the housing and engaging the supporting wheels, a pivoted member carried by the bars and having pins extending through slots therein and through slots in the ends of the yoke and entering recesses, in the ends of thefriction rollers carried by the brush whereby the brush is vertically adjustably supported and removable.

5. A carpet sweeper, comprising a housing, bars extending across; the ends of the housing and; spaced therefrom, supporting wheels carriedby the; housing within the spaces, a yoke formed of two "sections hav oted to the inner faces of the bars and extending into the housing and across the front thereof, a plate carriedby the housing, an L-shaped' lever carried by the: housing,

means for holding one end of the lever in its adjusted position, a pincarried by the opposite end of the lever and passing-through a slot in the plate and enteringslots in the overlappingportions of the yoke, sections,

a brush within thelhousing, rollers carried by the brush on the outside of. the housing.

and engaging the supporting wheels,gand

andhaving pins-extending through slots therein and through slots in the ends of the yoke and entering recesses-in theends of the friction rollers carried by .the brush whereby-the brush. is vertically adjustably supportedand removable.

In testlmonywhereof, we 1- aflix} our I signa- H tures in thepresence of two witnesses.

jJAMEs HQGRAHAM. "EVERETT MURDIOK Witnesses I G.'E. :HAMMANN',"

M EH USE 

